shibboleth_ds changes to make org list links work DMPRoadmap/roadmap#405

fixed double render issue in shibboleth_ds_passthru

bug fix to shibboleth_ds_passthru when page has normal dropdown box

tweaks to get shib sso login working when called from shibboleth_ds DMPRoadmap/roadmap#405 ...

(cherry picked from commit 2dc4fad)

added shibboleth Login.sso with entityID passthru action DMPRoadmap/roadmap#405 ...

(cherry picked from commit 314b24e)

added new custom shib ds page ...

(cherry picked from commit 5951ebe)

broken generic error message handler apart into separate create/update/destroy versions. updated calls within the controllers and fixed tests DMPRoadmap/roadmap#227

Added obj_name param to the generic error message handler on application_controller. Updated all save error handling to render the page rather than redirect DMPRoadmap/roadmap#227

fixed merge conflicts after rebase

patched organisation_type reference in view, added secure params to orgs controller. Added functional tests for orgs controller

fixes strong_parameters with orgs

resolve conflicts from merging Roadmap into DCC

fixes DMPRoadmap/roadmap#172

Replaced I18n.t(...) from controllers. DMPRoadmap/roadmap#98

updated orgs_controller, views, and model

bugfixes to allow org_admin pages to render

updated name for orgs_controller

updated organisations to orgs, and associated views/controller

renamed organisations_controller to orgs_controller